The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2018
Filed:
May. 12, 2017
Upm-kymmene Corporation, Helsinki, FI;
Mauno Miettinen, Lappeenranta, FI;
UPM-Kymmene Corporation, Helsinki, FI;
Abstract
The invention relates to a method for making a lignin component from lignin material by an acid treatment, the method comprising: subjecting the lignin material to at least one acid treatment stage by mixing the lignin material with an acid composition to produce an acid treatment mixture, wherein at least one acid treatment stage has a retention time over 6 hours and wherein the acid treatment mixture is held at a temperature of over 60° C. and a pH of 0.5-4 for the retention time of the acid treatment in order to increase dry solids content of the lignin component and decrease ash and carbohydrates of the lignin component. Further, the invention relates to corresponding lignin components, a use of the lignin component and a product.